Example usage for java.security MessageDigest update

Introduction

In this page you can find the example usage for java.security MessageDigest update.

Prototype

public final void update(ByteBuffer input) 

Source Link

Document

Update the digest using the specified ByteBuffer.

Usage

From source file:com.slimsmart.common.util.code.EncodeUtil.java

/**
 * MD5?/*from   w ww . java2 s  .c om*/
 */
public static String md5Encode(String input) {
    try {
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        md5.update(input.getBytes());
        byte[] byteDigest = md5.digest();
        return hexEncode(byteDigest);
    } catch (NoSuchAlgorithmException e) {
        logger.error("e:{}", e);
        return null;
    }
}

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From source file:Main.java

public static byte[] calculateMd5(byte[] binaryData) {
    MessageDigest messageDigest = null;
    try {/*  www .  j  a va  2s  .  c  o  m*/
        messageDigest = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("MD5 algorithm not found.");
    }
    messageDigest.update(binaryData);
    return messageDigest.digest();
}

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From source file:com.all.dht.util.Digest.java

public static byte[] getSha1(byte[] bytes) {
    byte[] sha1 = null;
    try {/*from  ww w .ja  va 2  s  .com*/
        MessageDigest md = MessageDigest.getInstance("SHA1");
        md.update(bytes);
        sha1 = md.digest();
        md.reset();
    } catch (Exception e) {
        LOG.fatal("Could not generate SHA1.", e);
    }
    return sha1;
}

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From source file:com.linkedin.databus.client.registration.RegistrationIdGenerator.java

/**
 * Generate a hash out of the String id// w ww . j av  a 2s  .  com
 *
 * @param id
 * @return
 */
private static String generateByteHash(String id) {
    try {
        final MessageDigest messageDigest = MessageDigest.getInstance("MD5");
        messageDigest.reset();
        messageDigest.update(id.getBytes(Charset.forName("UTF8")));
        final byte[] resultsByte = messageDigest.digest();
        String hash = new String(Hex.encodeHex(resultsByte));

        final int length = 8;
        if (hash.length() > length)
            hash = hash.substring(0, length);

        return hash;
    } catch (NoSuchAlgorithmException nse) {
        LOG.error("Unexpected error : Got NoSuchAlgorithm exception for MD5");
        return "";
    }
}

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From source file:org.shredzone.cilla.web.comment.CommentThreadServiceImpl.java

/**
 * Computes a mail hash that can be used at Gravatar.
 *
 * @param mail//  w w w. j a v a 2s .c  om
 *            mail address
 * @return md5 hash
 */
private static String computeMailHash(String mail) {
    try {
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        md5.reset();
        md5.update(mail.trim().toLowerCase().getBytes("UTF-8"));

        StringBuilder digest = new StringBuilder();
        for (byte b : md5.digest()) {
            digest.append(String.format("%02x", b & 0xFF));
        }

        return digest.toString();
    } catch (NoSuchAlgorithmException | UnsupportedEncodingException ex) {
        // we expect no exception, since MD5 and UTF-8 are standards
        throw new InternalError(ex.getMessage());
    }
}

---

From source file:com.goliathonline.android.kegbot.util.BitmapUtils.java

/**
 * Only call this method from the main (UI) thread. The {@link OnFetchCompleteListener} callback
 * be invoked on the UI thread, but image fetching will be done in an {@link AsyncTask}.
 *
 * @param cookie An arbitrary object that will be passed to the callback.
 *//*from   w w  w .  j av  a 2  s  . c  o m*/
public static void fetchImage(final Context context, final String url,
        final BitmapFactory.Options decodeOptions, final Object cookie,
        final OnFetchCompleteListener callback) {
    new AsyncTask<String, Void, Bitmap>() {
        @Override
        protected Bitmap doInBackground(String... params) {
            final String url = params[0];
            if (TextUtils.isEmpty(url)) {
                return null;
            }

            // First compute the cache key and cache file path for this URL
            File cacheFile = null;
            try {
                MessageDigest mDigest = MessageDigest.getInstance("SHA-1");
                mDigest.update(url.getBytes());
                final String cacheKey = bytesToHexString(mDigest.digest());
                if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
                    cacheFile = new File(Environment.getExternalStorageDirectory() + File.separator + "Android"
                            + File.separator + "data" + File.separator + context.getPackageName()
                            + File.separator + "cache" + File.separator + "bitmap_" + cacheKey + ".tmp");
                }
            } catch (NoSuchAlgorithmException e) {
                // Oh well, SHA-1 not available (weird), don't cache bitmaps.
            }

            if (cacheFile != null && cacheFile.exists()) {
                Bitmap cachedBitmap = BitmapFactory.decodeFile(cacheFile.toString(), decodeOptions);
                if (cachedBitmap != null) {
                    return cachedBitmap;
                }
            }

            try {
                // TODO: check for HTTP caching headers
                final HttpClient httpClient = SyncService.getHttpClient(context.getApplicationContext());
                final HttpResponse resp = httpClient.execute(new HttpGet(url));
                final HttpEntity entity = resp.getEntity();

                final int statusCode = resp.getStatusLine().getStatusCode();
                if (statusCode != HttpStatus.SC_OK || entity == null) {
                    return null;
                }

                final byte[] respBytes = EntityUtils.toByteArray(entity);

                // Write response bytes to cache.
                if (cacheFile != null) {
                    try {
                        cacheFile.getParentFile().mkdirs();
                        cacheFile.createNewFile();
                        FileOutputStream fos = new FileOutputStream(cacheFile);
                        fos.write(respBytes);
                        fos.close();
                    } catch (FileNotFoundException e) {
                        Log.w(TAG, "Error writing to bitmap cache: " + cacheFile.toString(), e);
                    } catch (IOException e) {
                        Log.w(TAG, "Error writing to bitmap cache: " + cacheFile.toString(), e);
                    }
                }

                // Decode the bytes and return the bitmap.
                return BitmapFactory.decodeByteArray(respBytes, 0, respBytes.length, decodeOptions);
            } catch (Exception e) {
                Log.w(TAG, "Problem while loading image: " + e.toString(), e);
            }
            return null;
        }

        @Override
        protected void onPostExecute(Bitmap result) {
            callback.onFetchComplete(cookie, result);
        }
    }.execute(url);
}

---

From source file:com.ncr.itss.core.utils.StringUtils.java

/**
 * SHA1//from w w w .j  a v  a2 s  .c  om
 *
 * @param str 
 * @return ?
 */
public static String generateSHA1(String str) {
    if (str == null) {
        return null;
    }
    try {
        MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
        messageDigest.update(str.getBytes());
        return byte2String(messageDigest.digest());
    } catch (Exception e) {
        return null;
    }
}

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From source file:com._37coins.CryptoUtils.java

/**
 * <p>// www. jav  a2  s. c o  m
 * Helper method that creates an RFC 2307-compliant salted, hashed password
 * with the SHA1 MessageDigest algorithm. After the password is digested,
 * the first 20 bytes of the digest will be the actual password hash; the
 * remaining bytes will be the salt. Thus, supplying a password
 * <code>testing123</code> and a random salt <code>foo</code> produces the
 * hash:
 * </p>
 * <blockquote><code>{SSHA}yfT8SRT/WoOuNuA6KbJeF10OznZmb28=</code>
 * </blockquote>
 * <p>
 * In layman's terms, the formula is
 * <code>digest( secret + salt ) + salt</code>. The resulting digest is
 * Base64-encoded.
 * </p>
 * 
 * @param password
 *            the password to be digested
 * @param salt
 *            the random salt
 * @return the Base64-encoded password hash, prepended by
 *         <code>{SSHA}</code>.
 * @throws NoSuchAlgorithmException
 *             If your JVM is totally b0rked and does not have SHA1.
 */
public static String getSaltedPassword(byte[] password, byte[] salt) throws NoSuchAlgorithmException {
    MessageDigest digest = MessageDigest.getInstance("SHA");
    digest.update(password);
    byte[] hash = digest.digest(salt);

    // Create an array with the hash plus the salt
    byte[] all = new byte[hash.length + salt.length];
    for (int i = 0; i < hash.length; i++) {
        all[i] = hash[i];
    }
    for (int i = 0; i < salt.length; i++) {
        all[hash.length + i] = salt[i];
    }
    byte[] base64 = Base64.encodeBase64(all);
    return SSHA + new String(base64);
}

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From source file:Main.java

public static String md5(String str) {
    MessageDigest algorithm = null;
    try {/*from w  ww .j  a  va2s . c  om*/
        algorithm = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    if (algorithm != null) {
        algorithm.reset();
        algorithm.update(str.getBytes());
        byte[] bytes = algorithm.digest();
        StringBuilder hexString = new StringBuilder();
        for (byte b : bytes) {
            hexString.append(Integer.toHexString(0xFF & b));
        }
        return hexString.toString();
    }
    return "";

}

---

From source file:tw.idv.gasolin.pycontw2012.util.BitmapUtils.java

/**
 * Only call this method from the main (UI) thread. The
 * {@link OnFetchCompleteListener} callback be invoked on the UI thread, but
 * image fetching will be done in an {@link AsyncTask}.
 * /*from  ww  w .  j a  v a  2s.  co m*/
 * @param cookie
 *            An arbitrary object that will be passed to the callback.
 */
public static void fetchImage(final Context context, final String url,
        final BitmapFactory.Options decodeOptions, final Object cookie,
        final OnFetchCompleteListener callback) {
    new AsyncTask<String, Void, Bitmap>() {
        @Override
        protected Bitmap doInBackground(String... params) {
            final String url = params[0];
            if (TextUtils.isEmpty(url)) {
                return null;
            }

            // First compute the cache key and cache file path for this URL
            File cacheFile = null;
            try {
                MessageDigest mDigest = MessageDigest.getInstance("SHA-1");
                mDigest.update(url.getBytes());
                final String cacheKey = bytesToHexString(mDigest.digest());
                if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
                    cacheFile = new File(Environment.getExternalStorageDirectory() + File.separator + "Android"
                            + File.separator + "data" + File.separator + context.getPackageName()
                            + File.separator + "cache" + File.separator + "bitmap_" + cacheKey + ".tmp");
                }
            } catch (NoSuchAlgorithmException e) {
                // Oh well, SHA-1 not available (weird), don't cache
                // bitmaps.
            }

            if (cacheFile != null && cacheFile.exists()) {
                Bitmap cachedBitmap = BitmapFactory.decodeFile(cacheFile.toString(), decodeOptions);
                if (cachedBitmap != null) {
                    return cachedBitmap;
                }
            }

            try {
                // TODO: check for HTTP caching headers
                final HttpClient httpClient = SyncService.getHttpClient(context.getApplicationContext());
                final HttpResponse resp = httpClient.execute(new HttpGet(url));
                final HttpEntity entity = resp.getEntity();

                final int statusCode = resp.getStatusLine().getStatusCode();
                if (statusCode != HttpStatus.SC_OK || entity == null) {
                    return null;
                }

                final byte[] respBytes = EntityUtils.toByteArray(entity);

                // Write response bytes to cache.
                if (cacheFile != null) {
                    try {
                        cacheFile.getParentFile().mkdirs();
                        cacheFile.createNewFile();
                        FileOutputStream fos = new FileOutputStream(cacheFile);
                        fos.write(respBytes);
                        fos.close();
                    } catch (FileNotFoundException e) {
                        Log.w(TAG, "Error writing to bitmap cache: " + cacheFile.toString(), e);
                    } catch (IOException e) {
                        Log.w(TAG, "Error writing to bitmap cache: " + cacheFile.toString(), e);
                    }
                }

                // Decode the bytes and return the bitmap.
                return BitmapFactory.decodeByteArray(respBytes, 0, respBytes.length, decodeOptions);
            } catch (Exception e) {
                Log.w(TAG, "Problem while loading image: " + e.toString(), e);
            }
            return null;
        }

        @Override
        protected void onPostExecute(Bitmap result) {
            callback.onFetchComplete(cookie, result);
        }
    }.execute(url);
}

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